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参数资料
| 型号： | TC1279-5ENBTR |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| 封装： | SOT-23B, 3 PIN |
| 文件页数： | 1/6页 |
| 文件大小： | 38K |
| 代理商： | TC1279-5ENBTR |
TC1278
TC1279
TC1278/9-1 2/4/00 TelCom reserves the right to make changes in the circuitry and specifications of its devices.
3-Pin Reset Monitors for 5V Systems
FEATURES
s
Precision VCC Monitor for 5.0V System Supplies
s
250 msec Guaranteed Minimum RESET
Output Duration
s
Output Guaranteed to VCC = 1.2V
s
VCC Transient Immunity
s
3-Pin SOT-23B Package
s
No External Components
TYPICAL APPLICATIONS
s
Computers
s
Embedded Systems
s
Battery Powered Equipment
s
Critical
P Power Supply Monitoring
GENERAL DESCRIPTION
The TC1278 and TC1279 are cost-effective system
supervisor circuits designed to monitor VCC in digital sys-
tems and provide a reset signal to the host processor when
necessary. No external components are required.
The reset output is driven active within 5
sec of VCC
falling through the reset voltage threshold. Reset is main-
tained active for a minimum of 250msec after VCC rises
above the reset threshold. The TC1278 has an active-high
RESET output while the TC1279 has an active-low RESET
output, and both devices have an open drain output stage.
The output is guaranteed valid down to VCC = 1.2V. Both
devices are available in a 3-Pin SOT-23 package.
TYPICAL OPERATING CIRCUIT
ORDERING INFORMATION
Part No.
Order
Package
Temp. Range
TC1278-xENB
Open Drain
3-Pin SOT-23B
– 40
°C to +85°C
TC1279-xENB
Open Drain
3-Pin SOT-23B
– 40
°C to +85°C
NOTE: The "x" denotes a suffix for VCC threshold - see table below.
Suffix
Reset VCC Threshold (V)
5
4.625
10
4.375
15
4.125
TC1279
VCC
3
1
2
VCC
RESET
INPUT
GND
PROCESSOR
PIN CONFIGURATION
*3-Pin SOT-23B
NOTES: *3-Pin SOT-23B is equivalent to JEDEC TO-236
VCC
RESET
GND
TC1278-xENB
TC1279-xENB
1
2
3
相关PDF资料 |
PDF描述 |
|---|---|
| TC1278-5ENBTR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| TC1278-15ENBTR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
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